Reversible magneto.



P. A. wauav. REVERSIBLE MAGNETO. APPUCATIOH HLED 1AN.19,1916.

1,292,193. Patented Jan. 21,1919.

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To all whomz'tntay concern: I

Be it known that I, PomaA. WILEY, a

citizen of the United States of America, re-- sidin at Kokomo, in the county of Howard and tate of Indiana, have invented certain new and useful Improvements in Reversible Magnetos, of whichthe following is a speci fication, reference being bad therein'to the accompanying drawings.

In the operation of inagnetos in various systems it is frequently desirable to reverse direction of rotation of the same and to do so without any 'n'e'cemity for readjustment of the parts v This invention relates to a reversible magneto and. to an arrangement of the parts whereby the generator is as efiective in one direction of motion as the other and whereby the change is made without necessity of any alteration-of parts, together with means whereby movement of the magneto armature itself.

The invention consists in the matters hereinafter set forth, and more particular] pointed out in the appended claims.-

In the drawings,

Figure 1 1s a view, partially tion and partially broken away tion, of a magneto that embodies features of the invention;

Fig, 2 is an end elevation of an interrupter in the position when the device is.

the direction indicated by' b operating under the arrow, that is, contra-clockwise;

Fig. 3 is a view of the interrupter inadvanced position when the magneto is operat- 16 ing in a clockwise direction;

Fig. 4. is a view in detail of a shaft coupling device with the parts in the giosition ihown when the magneto is operati g as in Fig. 5 is a view in detailof the coupling device showing the parts in the position assumed when the magneto is operating in the direction shown in Fi 3;

Fig. 6 i a view in sectional detail of the interrupter;

Fig. 7 is a view in v detail of an interrupter base;

'cillatory on the Y shaft or like there is no surging or irregular in Side ele vaand in secmannerand it may be convenientl "other adjustable interrupter mechanism Specification o tletteral'atent. Patenteddan 21,1919. v 'Applieaflon filed Ianuary19, 1 818. Serial-R0129.

Y is a view in detail of the cam plate, .ofan interruptenanddetail of the shaftcou- 1 conventional or standard type with field magnet 1 and armature 2, has a main shaft 3 at oneend of its length a lug 7 that of a driving sleeve 8. The latter is osbe non-rotatably securedto the driving partwhich isused to operate the shaft 3;

interrupter is secured in such' relation to a 9 the adjusted position of the member 6 that it is operative in either. direction of rotation of theshaft 3 and is arranged to' On theopposite end, alcontact breaker or magneto regardless of Whether the stop 7 is at one end of its limit of'mo of which a clutch collar 4; is secured as by a. pin 5, feather, key or the like.- The collar is counterbored and the re sultant flange 6 is cutawayfor a portion; to provide for the reception of projects from the annular face base 9 with annular: flange 1O thereon on. V

which the yoke 11 of an vinterrupter is os-' cillatory. A suitable stop 12 on the yoke limits etween. two. correspondin lugs 13 and 14 or if desirable to'reverse t e position of the yoke, it may play between other lugs 15 and cam late 17 carried by the main shaft 3 to which it is non-rotatably secured in any suitable manner periodically de- 8.81t0 separate terminals which is made fast to the yoke and'the' other to the spring member. The member 21 is insulatedvfrom the ground in any suitable y mounted on a binding post 22 Or the like; .Any

20- and 21, one of p a suitably arranged and designed. stud 18 on a spring plate -19 of the yoke so may .1

A ill e; brake 23'on 'a suitable bushing the motion of the latter tothe are 7 inatically in Figs. 4 and .5, and of course the .11.: driving parts.

' The plunger 23 may be of any suitable material and act as a brake without materially heating or wearing the contacting surfaces. Any other preferred form of brake that is suitable may be used.

The armature of the ma etc is of the .well known shuttle type as s own diagraminduction therethrough is at a maximum during a certain portlon of each revolution, due to the direction and distribution of the lines of force in the magnetic field. For. ex-

ample, with the parts as indicated in Figs.

2 and 4 the magneto running counter-clockwise, the effective range of action of the in-,

terrupter is approximately during the are of movement of the yoke defined by the stops 15 and 16 or the corresponding stops 13 and 14 if theyoke be reversed in direction for convenience of connection in a circuit. I Advancing .or retarding of the spark if the ma eto be in use in an ignition system may e obtained by shifting the 'yoke through this are the position shown in Fig. 2 being that .0 maximum advance while, when it is at the other end of the limit of its motion, the spark is retarded all in the usual manner. When the direction of the driving shaft of the member; which-operates the sleeve 8 is reversed, the change in angular relation of the sleeve 8 and the shaft 3 maintains the position of this effective range of action with the only difference that the s ark is retarded when the yoke is in the posltion shownin Fig. 2 and is advanced when in the position shown in Fig. 3.

If for any reason the load on the magneto circuit is'varied or the shaft or memher which. drives the sleeve 8 does not have constant rotation, the momentum of the armature is liable to cause a shift in position of the driving collar 8 in relation to the shaft 3. This is prevented by theconstant load which is imposed by the. plunger brake so that the armature does not tend to-overrun the driving shaft and thereby cause any undesirable change in the position of the As a result of this arrangement the angular position of the effective range of action latter, and without any adjustment by the user, save to advance or retard the sparking movement within this range. Obviously, changes in the details of construction may be made without departing from the spirit of my invention and I do not care to limit myself to any particular form or arrangement of parts.

'ment within theeffective range of the magnetic field, said adjustment being limited by the end of the magnetoat either of opposed points, a collar secured to the shaft, a driving sleeve engaging the collar and having limited angular movement in relation to the collar whereby the angular relation of the two is changed upon reversal of direction of rotation, and'means for frictionally re tarding'the shaft and maintaining the collar and sleeve at either limit of the movement of the latter.

3. In a magneto, an armature shaft, a friction brake constantly imposing a load upon the shaft, a driving collar secured to the shaft, a driving sleeve oscillatory on the shaft in interlocking relation with the collar and having limited angular motion in relation to the latter and a detachable interrupter secured to the shaft in fixed relation to the collar and capablev of being reversed for actuation at either side of the magneto to advance or retard-the. spark. I

4. In a magneto, anarmature shaft, an

armature secured thereon, a brake drum se-' I curedto the shaft, a brake member yieldingly contacting with the drum, a driven collar secured to the shaft, a driving sleeve oscillatory on the shaft having limited angular movement in relation to the collar with which it interlocks, aninterrupter base, and a detachable interrupter yoke on the shaft in fixed relation with the collar, and having a defined oscillatory movement relative to interrupter defining the angular adjustment of said interrupter, and means for frictionally imposlng a load upon the motor shaft. 6. 'A magneto comprising field pieces, an

armature shaft, an armature rotated thereby in operative relation to the field, an interrupter having angular adjustment within a fixed range of the magnetic field including a cam member operated by the shaft, a collar secured to the shaft in fixed relation to the interrupter operating member, a sleeve oscillatory on the shaft having limited angular movement in relation to the collar 10 with which it interlocks to drive the shaft,

Copies of this patent may be obtained for five cents a friction druin secured brake frictionally engaging whereof I affix my signature in presence of two Witnesses.

Witnesses PORTER A. WILEY.

M. F. GRACE, PAUL BURKE.

each, by addressin Washington, D. 0.

g the "Commissioner of Iatents,

to the shaft and a 

